im sure alotof guys here have been cycling longer than me but sfor the 5 or more years i have been cycling, i have had only 2 scares, first mistake from financial issues using alins shit, got a sterile abcess in my delt, stuck a hole in my should and squeezed puss and little blood out, no problems since thank god, second time shot winny in my delt when i first started cycling, my whole shoulder down to my elbow got red and i could move or lift my arm for a wk, felt sick but it healed. That was the scariest moment i have had when cycling, the pain SUCKED LOL